The special binder for lost foam casting coatings is primarily used to enhance drying strength, adhesion, and high-temperature strength of the coating. It helps reduce coating cracking and moisture absorption, thereby simplifying the in-plant preparation process of self-made coatings, improving casting quality, reducing casting defects, and increasing finished product yield.

Features:

1.Compatibility with Carbon Steel Pouring Conditions

With a refractoriness of 1600–1700 °C, the binder system is well matched to the pouring temperature of carbon steel (1450–1520 °C). Common refractory fillers include quartz powder and bauxite, providing strong resistance to molten steel erosion and effectively preventing sand burn-on.

2.Low Gas Generation to Prevent Porosity

The binder system (e.g., CMC combined with bentonite) exhibits low moisture absorption and minimal gas evolution after drying. With properly controlled permeability, it enables the timely discharge of gases generated during foam pattern vaporization, reducing subsurface porosity and related defects.

3.Strong Adhesion with Easy Cleaning

The binder provides excellent hang-on performance. The coating remains crack-free and firmly bonded after drying, and after pouring it peels off in a shell-like form, leaving a smooth casting surface and ensuring high cleaning efficiency.

4.Flexible Processing with Cost Efficiency

Recommended water-to-powder ratio: 1:0.65–0.7. The coating can be applied by dipping, pouring, or brushing, with a coating thickness of 0.8–1.2 mm. The dry powder offers a long shelf life and can be easily prepared by adding water, making it suitable for mass production of carbon steel castings such as flanges, gears, and structural components.

5.Environmentally Friendly and Safe

The binder contains no VOCs. Optimized formulations help reduce the risk of metal back-spray during pouring, thereby improving operational safety.

Zibo Tongpu Vacuum Equipment Co., Ltd. is located in the industrial machinery manufacturing base of China, the hometown of QlLU culture----.Gaoqing economic development zone, Zibo city of Shandong province.

Zibo Tongpu is a professional manufacturer that specialized in lost form and V-method casting equipment and all kinds of vacuum pumps. Here brought together a large number of science and technology workers at lost form and V-method casting for many years that have the rich experience. They are not only proficient in lost form and V-method design and manufacture of theoretical knowledge, but also have rich practical experience. So the equipment's new design could be more close to the users, more in line with the actual needs.

Zibo Tongpu founded in 2005, for the user to manufacture a number of lost form and V-method production lines successively. Including fully-automatic and semi-automatic production lines, but also tailored to the user's simple production line. Our products have a broad market, covering more than twenty provinces, cities and autonomous regions across in China. At the same time, exported to Thailand, South Korea, Taiwan, Vietnam, Indonesia, and Kazakhstan, Russia and so on countries and regions.

Zibo Tongpu has strong technical development and technology service capabilities. We can provide not only reliable casting equipment, but also lost form and V-method molding technology service. Meanwhile, we also undertake "turn-key" projects, according to customers’ demand. Besides, we have set up a foundry plant which adopts the lost form and V-method molding technique as main means of production so as to provide test base for customers to carry out first-phase product testing and stuff training. We provide a variety of services to need of customers at different levels.

We can willing to provide you our best and most sincere service! Let us join hands and work together for common development and growing. and achieve even greater glory. 

Zibo Tongpu can offer the following services:

One, Product trial: In the experimental base can be carried out with the early production development, to form a complete product technology and economic parameters report.

Two, Engineering design: Can provide the most optimized engineering design, the most reasonable process, the most economical investment costs, the most economical running costs

Three, Pre-sale service: Timely provide the prefect technical and business consulting, free to the field survey, technical communication with customers, and Professional design according to customer's requirement.

Four, Sale service: At the same time of equipment manufacture, responsible for the relevant personnel of the technical training, provide perfect technology solution, to ensure the project on schedule.

Five, After-sales service: have regular review system, listen to customer Suggestions. Establish customer service files, provide free lifetime technical support. No matter inside and outside the warranty period the received information respond immediately.